Its not that romanians believe that proto romanians lived there, it's a fact. The majority of the population was romanian, used as slave force pretty much by hungarian rulers of the area. Still the majority is romanian and the hungarian minority living there is just that, a minority. It's why in 1918 the huge popular vote was in favor of uniting. The 3 romanian states were being kept divised by the powers that be - turks, russians, habsburgs - exactly because a united Romania could become a dangerous thorn. A point well proven in the late 19th century and early 20th century until ww2. Bucharest was called Little Paris and rightly so, it was the first city in Europe with electric lighting and Romania was exporting grain to pretty much entire Europe. Then communism happened and in those 50 wasted years we got painfully backward. Its mostly a mental issue, as ppl under comunism were taught you dont have to work to be remunerated, there is no work ethic now, and everyone strives at making a quick buck with no work.
Also Vlad the Impaler had nothing to do with Transilvania, except prolly the confusion with Stokers novel, he was a ruler in Valachia.